[willemjav]

Mozart did not like the flute and when he was asked what he considers worse, he answered two flutes!

Finale I have the the program working. I have tested the application many times and everything works just fine. I have to take care of some esthetical things.... and done.

Probably the underlaying mistake of the program is that I did not put the GUI stuff into the top class. I have two waitloops taking care of the GUI management, and one in a new created thread. (PK, I did synchronize some method concerning your remark)

Code:

private void waitloop()  {
  
   wl = new Waitloop();
   wl.start();
   cont.setstartFlag(false);
   cont.selectonoff(true);
   start=false;
  
   do   { } while (!start);             // wait for start button 
        int trc = cont.gettrackNumb();  // read out the track number
        mainSoundblock(trc);
 
}


class Waitloop extends Thread {
   
        public Waitloop() {  
            cnt++;                                          // the thread counter
            System.out.println("count wait thread " + cnt); // to see what it is looping
        }
            public void run() {  
                cont.setstartFlag(false);
                
                do  {                 
                       
                } while (!cont.getstartFlag());          // read the start button           
                start=true;
                System.out.println("exit thread " + cnt);
                
            }
}


  


private void mainSoundblock(int trck)  {
    cont.ed.resetFbo();
    cont.setescFlag(false);
    trig=false; exit=false;
    if (trck==1 && !cont.getescFlag())  {
    Soundblock1();
    cont.settrackNumb(trck);
    trck=2;
    }
    
    if (trck==2 && !cont.getescFlag())  {
    Soundblock2();
    cont.settrackNumb(trck);
    trck=3;
    }
    
    if (trck==3 && !cont.getescFlag())  {
    Soundblock3();
    cont.settrackNumb(trck);
    trck=4;
    }
    
    if (trck==4 && !cont.getescFlag())  {
    Soundblock4();
    cont.settrackNumb(trck);
    trck=5;
    }

    ....... etc until 12

   System.out.println(" end of sound block " );
   cont.setescFlag(false);
 //  cont.ed.closeFbo1();
   cont.stopclk();
   cont.ed.resetFbo();
    waitloop();
}

Sure next programming project I should design differently and I will try to get rid of those un-elegant cpu consuming loops.

Two more questions
1) when appending text into a JTextArea, how could I keep the new text on sight at the screen (the new appended text scrolls down and disappears)?
2) Before going out of the application, at the very last moment, I would like to clean up some things (clossing drivers etc.). I am using the standard

window.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );

to exit.